The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for notifying D2D communication, the method comprising: generating, by a first UE, a first identity (ID) according to a type of D2D (Device to Device) communication; generating, by a first UE, a first indicator indicating that the first UE is trying to perform the type of D2D communication with at least one second UE; and transmitting, by the first UE, a first MAC PDU (Medium Access Control Protocol Data Unit) including the first ID and the first indicator to that at least one second UE.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for a first user equipment (UE) operating in a wireless communication system, the method comprising: generating, by the first UE, a Medium Access Control (MAC) Protocol Data Unit (PDU) including a first identity (ID) identifying the first UE and a second ID, and a plurality of logical channel IDs (LCIDs) and a plurality of MAC Service Data Units (SDUs) to be transmitted to a second UE; and transmitting, by the first UE to the second UE, the generated MAC PDU via a direct interface configured between the first UE and the second UE directly, wherein if the MAC PDU is for one-to-one communication, the second ID identifies the second UE and the MAC PDU includes an indicator indicating that the MAC PDU is for one-to-one communication, wherein if the MAC PDU is for one-to-many communication, the second ID identifying a group to which the second UE belongs and the MAC PDU includes an indicator indicating that the MAC PDU is for one-to-many communication, and wherein each MAC SDU of the plurality of MAC SDUs respectively corresponds to one LCID of the plurality of LCIDs.
2. The method according to claim 1 , wherein the indicator is a joining one-to-one communication indicator indicating that the second UE wants to join device-to-device (D2D) communication with the first UE if the MAC PDU is for one-to-one communication.
3. The method according to claim 1 , wherein the indicator is a joining one-to-many communication indicator indicating that the second UE wants to join device-to-device (D2D) communication with the group identified by the second ID if the MAC PDU is for one-to-many communication.
4. The method according to claim 1 , wherein the MAC PDU further includes a third ID identifying the second UE if the MAC PDU is for one-to-many communication.
5. A first User Equipment (UE) for operating in a wireless communication system, the first UE comprising: a Radio Frequency (RF) module; and a processor configured to: generate a Medium Access Control (MAC) Protocol Data Unit (PDU) including a first identity (ID) identifying the first UE and a second ID, and a plurality of logical channel IDs (LCID) and a plurality of MAC Service Data Units (SDUs) to be transmitted to a second UE, and control the RF unit to transmit the generated MAC PDU to the second UE via a direct interface configured between the first UE and the second UE directly, wherein if the MAC PDU is for one-to-one communication, the second ID identifies the second UE and the MAC PDU includes an indicator indicating that the MAC PDU is for one-to-one communication, wherein if the MAC PDU is for one-to-many communication, the second ID identifying a group to which the second UE belongs and the MAC PDU includes an indicator indicating that the MAC PDU is for one-to-many communication, and wherein each MAC SDU of the plurality of MAC SDUs respectively corresponds to one LCID of the plurality of LCIDs.
6. The first UE according to claim 5 , wherein the indicator is a joining one-to-one communication indicator indicating that the second UE wants to join device-to-device (D2D) communication with the first UE if the MAC PDU is for one-to-one communication.
7. The first UE according to claim 5 , wherein the indicator is a joining one-to-many communication indicator indicating that the second UE wants to join device-to-device (D2D) communication with the group identified by the second ID if the MAC PDU is for one-to-many communication.
8. The first UE according to claim 5 , wherein the MAC PDU further includes a third ID identifying the second UE if the MAC PDU is for one-to-many communication.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
January 21, 2015
July 17, 2018
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